20332453 has 4 divisors (see below), whose sum is σ = 20344608. Its totient is φ = 20320300.

The previous prime is 20332439. The next prime is 20332469. The reversal of 20332453 is 35423302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20332453 - 2¹⁷ = 20201381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3073 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (5086152).

Almost surely, 2^20332453 is an apocalyptic number.

It is an amenable number.

20332453 is a deficient number, since it is larger than the sum of its proper divisors (12155).

20332453 is a wasteful number, since it uses less digits than its factorization.

20332453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12154.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 20332453 is about 4509.1521375975. The cubic root of 20332453 is about 272.9375312707.

Adding to 20332453 its reverse (35423302), we get a palindrome (55755755).

The spelling of 20332453 in words is "twenty million, three hundred thirty-two thousand, four hundred fifty-three".